#!/usr/bin/env python3
# -*- coding: utf-8 -*-
__author__ = 'sundx'

import re

line = '你 好'
# regex_str = '^s.*3$'
# if re.match(regex_str,line):
#     print('yes')

regex_str = '(你\s好)'
regex_obj = re.match(regex_str,line)
if regex_obj:
    print(regex_obj.group(1))

